Gunnar Birkerts. Progressive Architecture 56 September 1975, 59 Gunnar Birkerts. GA Document. 9 1984, 97 Gunnar Birkerts. Architectural Record. Oct 1971, cover Gunnar Birkerts. Progressive Architecture 56 September 1975, 63 Gunnar Birkerts. Architectural Record. Oct 1971, 110 Gunnar Birkerts. Progressive Architecture 54 March 1973, 73 Gunnar Birkerts. GA Document. 9 1984, 98